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Diffstat (limited to 'shell')
-rw-r--r--shell/msh.c118
1 files changed, 57 insertions, 61 deletions
diff --git a/shell/msh.c b/shell/msh.c
index d821dfd20..754a6fc25 100644
--- a/shell/msh.c
+++ b/shell/msh.c
@@ -284,7 +284,6 @@ static void onintr(int s); /* SIGINT handler */
static int newenv(int f);
static void quitenv(void);
-static void err(const char *s);
static int anys(const char *s1, const char *s2);
static int any(int c, const char *s);
static void next(int f);
@@ -344,8 +343,6 @@ typedef union {
/* flags to yylex */
#define CONTIN 01 /* skip new lines to complete command */
-#define SYNTAXERR zzerr()
-
static struct op *pipeline(int cf);
static struct op *andor(void);
static struct op *c_list(void);
@@ -369,8 +366,6 @@ static char **copyw(void);
static void word(char *cp);
static struct ioword **copyio(void);
static struct ioword *io(int u, int f, char *cp);
-static void zzerr(void);
-static void yyerror(char *s);
static int yylex(int cf);
static int collect(int c, int c1);
static int dual(int c);
@@ -461,17 +456,10 @@ static int herein(char *hname, int xdoll);
static int run(struct ioarg *argp, int (*f) (struct ioarg *));
-/*
- * IO functions
- */
static int eofc(void);
static int readc(void);
static void unget(int c);
static void ioecho(char c);
-static void prs(const char *s);
-static void prn(unsigned u);
-static void closef(int i);
-static void closeall(void);
/*
@@ -734,10 +722,40 @@ void print_tree(struct op *head)
if (head->right)
print_tree(head->right);
}
-#endif /* MSHDEBUG */
+#endif /* MSHDEBUG */
+
+
+/*
+ * IO functions
+ */
+static void prs(const char *s)
+{
+ if (*s)
+ write(2, s, strlen(s));
+}
+
+static void prn(unsigned u)
+{
+ prs(itoa(u));
+}
+
+static void closef(int i)
+{
+ if (i > 2)
+ close(i);
+}
+
+static void closeall(void)
+{
+ int u;
+
+ for (u = NUFILE; u < NOFILE;)
+ close(u++);
+}
/* fail but return to process next command */
+static void fail(void) ATTRIBUTE_NORETURN;
static void fail(void)
{
longjmp(failpt, 1);
@@ -783,6 +801,7 @@ static void err(const char *s)
e.iop = e.iobase = iostack;
}
+
/* -------- area.c -------- */
/*
@@ -967,6 +986,7 @@ static char *strsave(const char *s, int a)
return "";
}
+
/* -------- var.c -------- */
static int eqname(const char *n1, const char *n2)
@@ -1487,6 +1507,24 @@ static char *cclass(char *p, int sub)
* shell: syntax (C version)
*/
+static void yyerror(const char *s) ATTRIBUTE_NORETURN;
+static void yyerror(const char *s)
+{
+ yynerrs++;
+ if (interactive && e.iop <= iostack) {
+ multiline = 0;
+ while (eofc() == 0 && yylex(0) != '\n');
+ }
+ err(s);
+ fail();
+}
+
+static void zzerr(void) ATTRIBUTE_NORETURN;
+static void zzerr(void)
+{
+ yyerror("syntax error");
+}
+
int yyparse(void)
{
DBGPRINTF7(("YYPARSE: enter...\n"));
@@ -1515,7 +1553,7 @@ static struct op *pipeline(int cf)
p = command(CONTIN);
if (p == NULL) {
DBGPRINTF8(("PIPELINE: error!\n"));
- SYNTAXERR;
+ zzerr();
}
if (t->type != TPAREN && t->type != TCOM) {
@@ -1548,7 +1586,7 @@ static struct op *andor(void)
p = pipeline(CONTIN);
if (p == NULL) {
DBGPRINTF8(("ANDOR: error!\n"));
- SYNTAXERR;
+ zzerr();
}
t = block(c == LOGAND ? TAND : TOR, t, p, NOWORDS);
@@ -1627,7 +1665,7 @@ static void musthave(int c, int cf)
peeksym = yylex(cf);
if (peeksym != c) {
DBGPRINTF7(("MUSTHAVE: error!\n"));
- SYNTAXERR;
+ zzerr();
}
peeksym = 0;
@@ -1811,7 +1849,7 @@ static struct op *dogroup(int onlydone)
if (c == DONE && onlydone)
return NULL;
if (c != DO)
- SYNTAXERR;
+ zzerr();
mylist = c_list();
musthave(DONE, 0);
return mylist;
@@ -1831,7 +1869,7 @@ static struct op *thenpart(void)
t->type = 0;
t->left = c_list();
if (t->left == NULL)
- SYNTAXERR;
+ zzerr();
t->right = elsepart();
return t;
}
@@ -1845,7 +1883,7 @@ static struct op *elsepart(void)
case ELSE:
t = c_list();
if (t == NULL)
- SYNTAXERR;
+ zzerr();
return t;
case ELIF:
@@ -2058,22 +2096,6 @@ static struct ioword *io(int u, int f, char *cp)
return iop;
}
-static void zzerr(void)
-{
- yyerror("syntax error");
-}
-
-static void yyerror(char *s)
-{
- yynerrs++;
- if (interactive && e.iop <= iostack) {
- multiline = 0;
- while (eofc() == 0 && yylex(0) != '\n');
- }
- err(s);
- fail();
-}
-
static int yylex(int cf)
{
int c, c1;
@@ -4803,32 +4825,6 @@ static int linechar(struct ioarg *ap)
return c;
}
-static void prs(const char *s)
-{
- if (*s)
- write(2, s, strlen(s));
-}
-
-static void prn(unsigned u)
-{
- prs(itoa(u));
-}
-
-static void closef(int i)
-{
- if (i > 2)
- close(i);
-}
-
-static void closeall(void)
-{
- int u;
-
- for (u = NUFILE; u < NOFILE;)
- close(u++);
-}
-
-
/*
* remap fd into Shell's fd space
*/